501 |
Giallo di Pigozzo, from Pigozzo, Val Squaranto; Verona, Veneto, Italy |
Burrowed fossiliferous micritic limestone with foraminifera and debris probably of bivalves. |
502 |
Marmorato di Osimo, from Osimo, Ancona, Marches, Italy |
Burrowed nodular fossiliferous micritic limestone with abundant 'filaments' of Buchia/Posidonia (bivalves). |
503 |
Palombino di Cesena, from Cesena in Emilia, Forli, Emilia-Romagno, Italy |
Micritic limestone showing faint iron-staining constrained by a system of healed microfractures. |
504 |
Marmo venato di Tivoli, from Tivoli, Roma, Lazio, Italy |
Biomicrite with scattered dendritic manganese oxides. Side of specimen shows slumping and intraclasts in stylolitised shelly limestone. Note subsequent extensive fracturing, the fractures calcite-filled. |
505 |
Marmo venato di Tivoli, from Tivoli, Roma, Lazio, Italy |
Recrystallised, probably originally bioturbated, micritic or microspar limestone with extensive stylolites and calcite filled fractures. |
506 |
'Corso della mola di Sant'Ambrogio', from Sant' Ambrogio di Valpolicella, Verona, Veneto, Italy |
Recrystallised, probably originally bioturbated, micritic or microspar limestone with extensive stylolites and calcite filled fractures. |
507 |
Pietra paesina, from Florence, Tuscany, Italy; and most probably from Valdarno |
Micritic limestone or calcareous marl from the Cretaceous Alberese Formation, with red hematitic specks and stylolites. Calcite-filled microfractures control iron-staining. Some dendritic Mn oxides emanate from the fractures. |
508 |
Pietra paesina, from Civitavecchia, Rome, Lazio, Italy |
Micritic limestone or calcareous marl from the Cretaceous-Eocene Alberese Formation. Calcite-filled microfractures control iron-staining. Some dendritic manganese oxides emanate from the fractures. |
509 |
'Argilla di Terni', from Terni, Umbria, Italy; or may be Tivoli, Roma, Lazio, Italy |
Burrowed micrite/microsparite limestone with abundant calcispheres and conspicuous dissolution fabrics (dark seams). |
510 |
Pietra paesina, from Florence, Tuscany, Italy; and most probably from the Valdarno |
Calcareous marl/marly limestone from the Upper Cretaceous Alberese Formation. Calcite-filled microfractures control extent of iron/manganese colouration. Note the prominent stylolites. |
511 |
Alberese limestone, from Florence, Tuscany, Italy; and most probably from Valdarno |
Micritic limestone or calcareous marl from the Upper Cretaceous Alberese Formation. Fractures are calcite-filled. |
512 |
Argilla antica, locality unknown |
Most probably a calcareous mudstone, it contains planktonic forams. |
513 |
Palombino venato, locality unknown |
Algal limestone. |
514 |
Argilla di Tivoli, from Tivoli, Roma, Lazio, Italy |
Brecciated fine-grained limestone. A fossiliferous biomicrite with scattered bioclasts (calcispheres or radiolaria). Fractures are calcite-filled. |
515 |
Diaspro di Volterraio, from Volterraio, island of Elba, Livorno, Tuscany, Italy |
A siliceous argillaceous deposit, perhaps a deep sea red clay. |
516 |
Mandolato di Verona, from Verona, Veneto, Italy |
Limestone. A burrowed biomicrite with abundant planktonic forams and calcispheres, cut by a calcite-filled fracture system and stylolites. |
517 |
Rosso di Terni, from Terni, Umbria, Italy |
Limestone. A stylolitised burrowed biomicrite crowded with planktonic forams, calcispheres and other small bioclasts. |
518 |
Rosso di Fuligno, from Foligno, Perugia, Umbria, Italy |
Calcarenite, with no obvious biogenic grains. Patchy areas of pyrite, and scattered dendrites of manganese/iron oxides are present. |
519 |
Pietra paesina, from the province of Naples, Campania, Italy |
Micritic limestone or calcareous marl. Calcite-filled microfractures control iron-staining which together with Liesegang rings of colour, gives the 'paesina' effect. Some dendritic manganese oxides are evident. |
520 |
Giallo di Mizzolle, from Mizolle, Val Pantena, Verona, Veneto, Italy |
Micritic limestone with abundant yellow rhombic microcrystals of calcite. It has spar-filled fractures and scattered dendritic manganese oxides. |
521 |
Broccatello di Sentro, from the Verona area, Veneto, Italy. 'Sentro' is perhaps Centro. |
Brecciated limestone containing scattered yellow euhedral rhombs of calcite, and dendritic manganese oxides. |
522 |
Pietra felce dell'Elba, pietra paesina, from the island of Elba, Livorno, Tuscany, |
Micritic limestone or calcareous marl showing minor fracture constrained iron-staining giving faint paesina effect. It has abundant areas of dendritic manganese oxides. |
523 |
Pietra paesina, from Valdarno, Florence, Tuscany, Italy |
Micritic limestone or calcareous marl from the Cretaceous Alberese Formation, showing minor fracture constrained iron-staining, and areas of dendritic manganese oxides. |
524 |
landscape marble, alberese di Ponte a Rignano, from Ponte a Rignano, Florence, Tuscany, Italy |
Micritic limestone or calcareous marl from the Cretaceous Alberese Formation, showing well-developed dendrites of manganese oxides. |
525 |
Breccia di Modena, from Modena, Emilia-Romagna, Italy |
Micrite/microsparite limestone with abundant bioclasts, extensively fractured and stylolitised. Dendritic iron and manganese oxides are developed along stylolites. |
526 |
Breccia di Modena, from Modena, Emilia-Romagna, Italy |
Micrite/microsparite limestone with abundant bioclasts, extensively bioturbated, fractured and stylolitised. Dendritic iron and manganese oxides are developed along stylolites. |
527 |
Calcare compatta di Pisa, from Pisa, Tuscany, Italy |
Micritic limestone containing scattered grains of quartz. Dendritic growths of manganese/iron oxides emanate from fractures and form discrete spots, and are particularly well developed on the unsawn reverse of the sample. Brown areas are filler/polishing compound. |
528 |
Pietra paesina, from Civitavecchia, Rome, Lazio, Italy |
Micritic limestone or calcareous marl from the Cretaceous-Eocene Alberese Formation. Calcite-filled microfractures control iron-staining, giving the 'paesina' effect. Minor dendritic manganese oxides emanate from the fractures. |
529 |
Pietra paesina, from Valdarno, Florence, Tuscany, Italy |
Micritic limestone or calcareous marl from the Cretaceous Alberese Formation. Calcite-filled microfractures control iron-staining. Some dendritic Mn oxides emanate from the fractures. |
530 |
Pietra paesina, from Valdarno, Florence, Tuscany, Italy |
Micritic limestone or calcareous marl from the Cretaceous Alberese Formation. Calcite-filled microfractures control iron-staining. Some dendritic Mn oxides emanate from the fractures. |
531 |
Pietra paesina, from Valdarno, Florence, Tuscany, Italy |
Micritic limestone or calcareous marl from the Cretaceous Alberese Formation. Calcite-filled microfractures control iron-staining. It is cut by a large calcite-filled vein. |
532 |
Pietra paesina, from Valdarno, Florence, Tuscany, Italy |
Micritic limestone or calcareous marl from the Cretaceous Alberese Formation. It is heavily iron-stained, the coloration constrained by abundant calcite-filled microfractures. Manganese oxide dendrite are also abundant. |
533 |
Pietra paesina, from Civitavecchia, Rome, Lazio, Italy |
Micritic limestone or calcareous marl from the Cretaceous-Eocene Alberese Formation. Liesegang rings of iron-staining colour the specimen. |
534 |
Pietra paesina, from Civitavecchia, Rome, Lazio, Italy |
Micritic limestone or calcareous marl from the Cretaceous-Eocene Alberese Formation. Brown ferruginous calcite or siderite-filled veins cut the specimen and there is some pink coloration constrained by calcite-filled microfractures giving a faint 'paesina' effect. |
535 |
Marmo rosso di Siracusa, from Syracuse, Sicily, Italy |
Perhaps a deep-water mudstone. The colours are diagenetic. |
536 |
Diaspro tenero di Sicilia, tigrato di Trapani, from Custonaci, Trapani, Sicily, Italy |
Micritic or microsparite limestone containing a mass of Teredo or similar wood-boring bivalves; no evidence of the wood itself remeins. |
537 |
Diaspro tenero di Sicilia, pietra topografica di Taormina, from Taormina, Messina, Sicily, Italy |
Micritic limestone or marl with diagenetic colouring. Veins and fractures are filled with calcite. |
538 |
Alabastro di Siena, from Siena, Tuscany, Italy |
Banded yellow calcite, probably a compact banded travertine. |
539 |
Fluorite with galena and baryte, from Crich, Derbyshire, England |
Hydrothermal vein deposit of colourless to yellow iron-stained fluorite with galena and white crested baryte. Fluorite zoned with inclusions of marcasite/pyrite. |
540 |
Fluorite, Blue John, from Derbyshire, England |
Hydrothermal vein deposit of fluorite. The narrow purple-blue colour zone indicates it is the Blue John variety. |
541 |
Fluorite, Blue John, from Castleton, Derbyshire, England |
Hydrothermal vein deposit of colour-zoned purple-blue/colourless fluorite, the variety known as Blue John. It has some yellow ferruginous staining. |
542 |
Fluorite, from Crich, Derbyshire, England |
Hydrothermal vein deposit of colourless/iron-stained fluorite, in places showing zoning with inclusions of pyrite/marcasite. It also contains sparse euhedral crystals of sphalerite. |
543 |
Blue John fluorite, from Castleton, Derbyshire, England |
Hydrothermal vein deposit of colour-zoned purple-blue/colourless fluorite, the variety known as Blue John. |
544 |
Gesso di Castellina Marittima, alabastro di Castellina Marittima, alabastro di Volterra, from Castellina Marittima, Pisa, Tuscany, Italy |
Fine-grained compact gypsum (alabaster) with calcite-filled fractures. |
545 |
Gesso di Volterra, alabastro di Volterra, from Volterra, Pisa, Tuscany, Italy |
Fine-grained compact gypsum (alabaster). |
546 |
Gesso di Iesi, alabastro di Iesi, from Iesi, Ancona, Marches, Italy |
Fine-grained compact gypsum (alabaster) - nodular mass, fibrous towards margins. |
547 |
Gesso di Matelica, alabastro di Matelica, from Matelica, Macerata, Marches, Italy |
Crystals of gypsum as dark 'spots', and small fragments of micritic limestone, in a matrix of fine-grained compact gypsum (alabaster). |
548 |
Lumachella di San Vitale, from the province of Verona, Veneto, Italy |
Not Gypsum. A Lower Jurassic limestone; matrix is fossiliferous micrite/microspar with molluscan debris. The large white intraclasts are heavily recrystallised shells of 'Lithiotis' bivalves. It has abundant stylolites. |
549 |
Gesso di Matelica, alabastro di Matelica, from Matelica, Macerata, Marches, Italy |
Micritic limestone containing bands of gypsum crystals, as spots and patches in fine-grained compact gypsum (alabaster). |
550 |
Gesso di Matelica, alabastro di Matelica, from Matelica, Macerata, Marches, Italy |
Micritic limestone containing bands of gypsum crystals, as spots and patches in fine-grained compact gypsum (alabaster). |
551 |
Fluorite, probably from Italy |
Banded colourless fluorite with inclusions of pyrite, and ?clay. |
552 |
Gesso di Faenza, from Faenza, Ravenna, Emilia-Romagna, Italy |
Calcite-cemented breccia with small angular gypsum clasts, patches of micritic limestone and smaller dark grains. |
553 |
Pietra rota degli Appennini, from the Apennines, Italy |
Quartzite with limonitic cement. |
554 |
Arenaria di Brianza, from the Brianza area, Lombardy, Italy |
Fine-grained biocalcarenite with micritic/microspar matrix. |
555 |
Arenaria di Siena, from Siena, Tuscany, Italy |
Bioclastic limestone with microspar matrix. It has white algal grains and spar-filled anastomising vugs, probably incipient birds-eyes. |
556 |
Arenaria di Viggiù, from Viggiù, Varese, Lombardy, Italy |
Bioturbated fine biocalcarenite. The grains are predominantly echinoderm, probably crinoidal. It has solution seams/incipient stylolites. |
557 |
Arenaria antica, locality unknown |
Originally a micritic limestone with indeterminate spar-filled ?brachiopods, this is now partly recrystallised. |
558 |
'Arenaria di Corsica'; Corsica, France, is not confirmed. |
Impure medium-grained calcite marble, containing disseminated crystals of green chlorite and brown ferruginous matter which show a marked foliation. |
559 |
Arenaria antica, locality unknown |
Coarse-grained biocalcarenite, with algal, foram, and molluscan grains dominant. |
560 |
Lavagna antica, locality unknown |
Fine-grained siliceous rock with a few carbonate grains; The aggregates of orange-brown crystals are almost certainly relics of pyrite crystals; elsewhere, the pyrite is visible. Slate is not confirmed. |
561 |
Lavagna di Cesena, from Cesena in Emilia, Forli, Emilia-Romagno, Italy |
Calcarenite with spar-filled fractures. Cubic pyrite crystals coat back of specimen. |
562 |
Lavagna di Genoa, ardesia di Lavagna, from Genoa, Liguria, Italy |
Black slate. Fine-grained with fine layering and a few vein stringers parallel to the cleavage. |
563 |
Marmo polveroso di Pistoia, from Pistoia, Tuscany, Italy |
Micritic limestone with abundant planktonic foraminifera. |
564 |
Pietra alluminosa (alumstone), from Monti della Tolfa, near Civitavecchia, Rome, Lazio, Italy |
Alumstone. Medium- to fine-grained granular alunite with abundant cavities (vugs) lined with alunite crystals. Red/ brown is iron staining mainly in and around the vugs. |
565 |
Verde antico, from Larissa, Thessaly, Greece |
A breccia of serpentinite, schistose calc-silicate and crystalline marble clasts in a lime-green serpentinite matrix. |
566 |
Verde antico, from Larissa, Thessaly, Greece |
Breccia with clasts mainly of serpentinite/ophicalcite, a few of marble; extensive scattered crystals of oxide minerals, in a serpentine and calcite matrix. Heavily fractured, many fractures are filled with cross-fibres of chrysotile serpentine. |
567 |
Serpentina verde ranocchia, from Wadi Umm Esh, Wadi Atalla region, Eastern Desert, Egypt; or a variety of verde di Polcevera, from Pietra Lavazzara, Genoa, Liguria, Italy |
Strongly sheared and serpentinised ultramafic rock with abundant granular patches and veinlets of black oxide minerals within the serpentine. Later veinlets of yellow serpentine cut the rock in sub-linear arrays. |
568 |
Serpentina 'verde ranocchia', locality unknown |
Strongly-sheared and serpentinised ultramafic rock with abundant veinlets (some en echelon) and grains of oxide mineral within the serpentine, and minor veins of calcite. |
569 |
Serpentina verde di Varallo, from Varallo, Novara, Piedmont, Italy |
Brecciated serpentinite-marble with light to dark green fragmented serpentinite clasts in fine-grained marble and vein calcite matrix. Serpentinite has local concentrations of fine-grained oxide mineral. |
570 |
Serpentina verde di Varallo, from Varallo, Novara, Piedmont, Italy |
A sheared breccia of serpentinite clasts in fine-grained calcite matrix, with abundant streaks and grains of dark grey oxide minerals. |
571 |
Serpentina verde di Susa, from Val di Susa, Turin, Piedmont, Italy |
Serpentinite veined with fine-grained grey calcite. |
572 |
Serpentina verde di Susa, from Val di Susa, Turin, Piedmont, Italy |
Heavily fractured serpentinite, cemented with grey calcite. |
573 |
Serpentina verde di Calabria, from Calabria, Italy |
Brecciated serpentinite. |
574 |
Pietra Braschia, from The Western Alps |
Garnet peridotite showing reaction rims with radial structure around embayed garnets. The outer rim is probably granular pyroxene. The matrix is olivine-rich, recrystallised, with a tectonic fabric. |
575 |
Serpentina di Valsabbia, from Valsabbia, Brescia, Lombardy, Italy |
Breccia with clasts mainly of serpentinite/ophicalcite, a few of marble. |
576 |
Serpentina dell'Elba, from the island of Elba, Livorno, Tuscany, Italy |
Dark green serpentinite with colourless plagioclase porphyroblasts. |
577 |
Verde ragano dell'Elba, from the island of Elba, Livorno, Tuscany, Italy |
Serpentinised peridotite with clear dextral shear fabric and augen up to a centimetre across. |
578 |
Verde ranocchia, from Wadi Umm Esh, Eastern Desert, Egypt |
Serpentinite; a metamorphosed gabbro; most probably the Wadi Umm Esh/Atalla serpentinite. |
579 |
Verde di Prato, from Prato, Florence, Tuscany, Italy |
Serpentinised peridotite (lherzolite) - coarse-grained, former olivine, orthopyroxene and clinopyroxene are still evident. |
580 |
Verde di Prato, from Prato, Florence, Tuscany, Italy |
Serpentinised peridotite with coarse original texture, and fine detail in the serpentinisation (low temperature alteration) preserved. Vein is quartz. |
581 |
Verde di Prato, from Prato, Florence, Tuscany, Italy |
Serpentinisied peridotite with pyroxenitic vein or band. |
582 |
Verde tenero di Corsica, from Corsica, France |
Fine-grained quartz (chalcedony) rock, perhaps with relic textures of a granitic rock. Dendritic goethite emanates from the many fractures. |
583 |
'Serpentina verde dell'Elba', from the island of Elba, Livorno, Tuscany, Italy |
Actinolite rock. Radiating crystals of actinolite; the surface is coated with brown filler. |
584 |
Serpentina verde di Polcevera, from Polcevera, Genoa, Liguria, Italy |
Brecciated serpentinite. |
585 |
Serpentina verde di Polcevera, from Polcevera, Genoa, Liguria, Italy |
Brecciated serpentinite. |
586 |
Serpentina verde di Polcevera, from Polcevera, Genoa, Liguria, Italy |
Brecciated serpentinite. |
587 |
Serpentina verde di Polcevera, from Polcevera, Genoa, Liguria, Italy |
Brecciated serpentinite. |
588 |
Serpentina di Corsica, from Corsica, France |
Amphibolite; probably mostly actinolite - mainly granular but fibrous/prismatic in veins. Irregular patches and veinlets of opaque oxide (probably magnetite). Contains disseminated pale yellow carbonate flecks. |
589 |
Verde di Prato, from Prato, Florence, Tuscany, Italy |
Serpentinised coarse peridotite, and clear milky and fibrous serpentine veins. Various microstructures of alteration and exsolution in pyroxene visible on the slab surface. Note opaque white ?quartz veins and a few small calcite veins. |
590 |
Verde di Prato, from Prato, Florence, Tuscany, Italy |
Serpentinised peridotite (lherzolite) - coarse-grained, former olivine, orthopyroxene and clinopyroxene are still evident. |
591 |
Serpentina di Corsica, from Corsica, France |
Strongly altered and deformed coarse-grained former olivine gabbro. Note areas with disseminated pale yellow carbonate flecks. |
592 |
Serpentina di Corsica, from Corsica, France |
Serpentinised harzburgite with coarse relict texture making it easy to distinguish former olivine and orthopyroxene domains. Note the chrysotile veins. |
593 |
Marmo di Santa Cattarina dell'Elba, from the island of Elba, Livorno, Tuscany, Italy |
Serpentinite, finely brecciated and veined with calcite. |
594 |
Serpentina verde di Genova, from Genoa, Liguria, Italy |
Brecciated serpentinite. Broken clasts of pale green serpentine, platey 'striped' dark green serpentine and brown/white marble in a matrix of brown and white calcite. |
595 |
Serpentina di Chiavari, from Chiavari, Genoa, Liguria, Italy |
Altered peridotite. The green is mainly fine actinolite; whitish areas are scattered with tiny opaque flakes perhaps of chromite. The dark coloured oxide, probably magnetite, has with brown and green-black reaction rims. |
596 |
Serpentina verde di Piombino, from Piombino, Livorno, Tuscany, Italy |
Green and white-banded L-S tectonite with low-strain augen. It is made almost entirely of narrow prismatic minerals, probably actinolite (green) and clinozoisite (white), strongly aligned in foliae, at high angles to fabric in augen. There are possibly some pyroxene relics in augen. These minerals suggest it could be derived from a rather melanocratic gabbro. |
597 |
Serpentina verde di Genova, from Genoa, Liguria, Italy |
Metaperidotite - probably serpentine and actinolite. |
598 |
Serpentina di Corsica, from Corsica, France |
Breccia of angular clasts of brown and pale green serpentinite in a paler coloured matrix with a reticulated system of very fine grey fibrous chrysotile veins throughout. |
599 |
Serpentina delle Alpi, from the Alps (not confirmed) |
A hydrothermally altered mafic or ultramafic rock, most probably a serpentinised peridotite. |
600 |
Serpentina delle Alpi, from the Alps (not confirmed) |
Serpentinite with calcite-filled veins and cavities. |